Order by last comment vs Bump

accithanos

When i enable "Configuration > Site>Activity>Order by last comment" then front-page displays all posts with comments, and then displays posts with no comments, even if the not commented posts are chronologically later (newer) than a comment.
As a result a not commented brand new post, that is newer than any comment of any post, goes deep down the list.
A possible solution would be to order by last action, post or comment, like "bump".